CN111313309A - Stroke-controllable guide rail hydraulic lifting type underground ring main unit system and control method - Google Patents
Stroke-controllable guide rail hydraulic lifting type underground ring main unit system and control method Download PDFInfo
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- CN111313309A CN111313309A CN202010106563.4A CN202010106563A CN111313309A CN 111313309 A CN111313309 A CN 111313309A CN 202010106563 A CN202010106563 A CN 202010106563A CN 111313309 A CN111313309 A CN 111313309A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 241000282326 Felis catus Species 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 101150054854 POU1F1 gene Proteins 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
- B66F7/04—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/50—Pedestal- or pad-mounted casings; Parts thereof or accessories therefor
- H02B1/505—Pedestal- or pad-mounted casings; Parts thereof or accessories therefor retractable installations
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Power Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a travel-controllable guide rail hydraulic lifting type underground ring main unit system and a control method thereof. Through set up first travel switch and second travel switch in lifting frame's top and bottom, can touch first travel switch or second travel switch at predetermined stop position of lift platform motion, and then make the looped netowrk cabinet stop at the assigned position, guarantee that the looped netowrk cabinet rises to ground and buries the stop position in the underground and keep unanimous, avoided because staff's misoperation causes to go up and down to stop and cause the condition of damage to elevation structure and looped netowrk cabinet, prolonged the life of looped netowrk cabinet.
Description
Technical Field
The invention relates to the field of buried ring main units, in particular to a guide rail hydraulic lifting type buried ring main unit system with a controllable stroke and a control method.
Background
The ring main unit is a group of electric equipment which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts a load switch and a fuse, so that the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. The ring main unit is widely applied to distribution stations and box-type substations of load centers such as urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like, and for urban business centers, industrial parks and densely populated areas which are limited by space or require attractive appearance, the ring main unit is usually expected to be hidden and installed in underground space, so that the problems of no occupation of urban roads, no greening area, no influence on urban appearance and pedestrian safety are solved.
Because the lifting type underground ring main unit is operated by workers when being lifted, the ring main unit is lifted to the ground and is required to be consistent with the underground stop position every time, if the ring main unit is stopped excessively, the lifting structure and the ring main unit are damaged, and the lifting stroke of the lifting type ring main unit is required to be controlled.
Disclosure of Invention
The invention aims to provide a travel-controllable guide rail hydraulic lifting type underground ring main unit, and solves the problem that a lifting structure and the ring main unit are damaged due to the fact that the existing lifting type underground ring main unit is stopped excessively in the lifting process.
In order to achieve the above purpose, the invention provides the following technical scheme: the hydraulic lifting type underground ring main unit system with the guide rail and the controllable stroke is arranged in a foundation pit and comprises a vertical lifting structure, a first stroke switch, a second stroke switch and a ring main unit, wherein the vertical lifting structure is installed in the foundation pit, the ring main unit is installed on the vertical lifting structure, and the vertical lifting structure comprises a lifting frame, a chain wheel bracket guide rail, a first guide wheel, a chain wheel, a lifting platform guide rail, a second guide wheel, a chain connecting plate, a chain, a hydraulic rod, a hydraulic pump and a hydraulic oil pipe;
the lifting frame is installed at the bottom of the foundation pit and comprises a base and four stand columns standing on four corners of the base, the number of the chain wheel support guide rails is four, the four chain wheel support guide rails are fixedly connected to the four stand columns of the lifting frame respectively, the chain wheel support is connected to the chain wheel support guide rails in a sliding mode through first guide wheels at the upper end and the lower end of the chain wheel support, the first guide wheels are rotatably arranged at the upper end and the lower end of the chain wheel support, and the chain wheel is rotatably installed at the top of the chain wheel support;
the bottom of the chain wheel support is fixedly connected with the output ends of the hydraulic rods, the bottom of the hydraulic pump is fixed on a base of the lifting frame, and the hydraulic pump is communicated with the two hydraulic rods through hydraulic oil pipes;
the lifting platform is connected in the lifting platform guide rails in a sliding manner through second guide wheels, the second guide wheels are rotatably fixed at four corners of the lifting platform, and the ring main unit is fixedly arranged at the top of the lifting platform;
the chain connecting plates are respectively welded on the four stand columns of the lifting frame and the four corners of the lifting platform, the chains are meshed with the chain wheels, and two ends of each chain are respectively fixed on the lifting frame and the chain connecting plates of the lifting platform;
the first travel switch is installed at the top of the lifting frame, the second travel switch is installed at the bottom of the lifting frame, and the first travel switch and the second travel switch are respectively located at the upper end part and the lower end part of the movement stroke of the lifting platform.
Preferably, the bottom of the lifting frame is fixed on the lower bottom surface of the inner cavity of the foundation pit through expansion bolts.
Preferably, the lifting frame is welded by a steel structure, and the chain wheel support and the lifting platform are of square structures formed by welding square pipes.
Preferably, the chain wheel support guide rail and the lifting platform guide rail are both C-shaped bent steel structures.
Preferably, the chain connecting plate is a steel piece.
Preferably, the ring main unit further comprises a foundation pit cover plate, an access door, an access ladder, a drain pipe and a ventilation pipe, wherein the foundation pit cover plate is fixed to the top of the ring main unit, drain grooves are formed in the periphery of the upper end of the foundation pit, the drain pipe is communicated with the drain groove, a boss matched with the drain groove in the upper end of the foundation pit is arranged at the bottom of the foundation pit cover plate, and a sealing rubber strip is arranged on the boss;
the utility model discloses a maintenance ladder, including foundation ditch, access door, maintenance cat ladder, ventilation pipe, access hole, access door, maintenance cat ladder, maintenance access hole, ventilation pipe and foundation ditch, the access hole has been seted up to the lateral wall of foundation ditch, access door installs and reserves access hole department at the foundation ditch, the maintenance cat ladder is installed in the bottom of foundation ditch, the top of maintenance.
Preferably, the foundation pit cover plate is of a steel structure.
The first travel switch is installed at the top of the lifting frame, the second travel switch is installed at the bottom of the lifting frame, and the first travel switch and the second travel switch are respectively located at the upper end part and the lower end part of the movement stroke of the lifting platform.
When an ascending button SB2 is pressed, the lifting platform ascends, and when the lifting platform runs to the position of a first travel switch SQ1, the first travel switch SQ1 is disconnected, and the lifting platform stops running; when a row button SB3 is pressed, the lifting platform moves downwards, and when the lifting platform runs to the position of a second travel switch SQ2, the second travel switch SQ2 is disconnected, and the lifting platform stops running; in the operation process, if the operation needs to be stopped, the lifting platform can be stopped by pressing a stop button SB 1; in summary, the purpose of controlling the stroke is realized by adjusting the position of the stroke switch, and the consistent stop positions of the lifting to the ground and the burying under the ground are always ensured.
Advantageous effects
The technical scheme of the application has the following technical effects:
1. according to the invention, the first travel switch and the second travel switch are arranged at the top and the bottom of the lifting frame, and the first travel switch or the second travel switch can be touched when the lifting platform moves to the preset stop position, so that the ring main unit is stopped at the specified position, the ring main unit is ensured to be lifted to the ground and buried in the ground to keep consistent stop positions, the condition that the lifting structure and the ring main unit are damaged due to over-stop of lifting caused by improper operation of workers is avoided, and the service life of the ring main unit is prolonged.
2. The lifting of the buried ring main unit is completed through the vertical lifting structure, the hydraulic pump is utilized to drive the hydraulic rod to stretch, the hydraulic rod stretches and retracts to drive the chain wheel support and the chain wheel to move, and the chain is meshed with the chain wheel on the chain wheel support, and the two ends of the chain are respectively fixed on the lifting frame and the chain connecting plate of the lifting platform, so that the chain wheel support can drive the lifting platform to move while moving up and down, and further the ring main unit is driven to lift.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic view of a state that the ring main unit is lowered into a foundation pit.
FIG. 3 is an enlarged view of a portion of A in FIG. 1 according to the present invention.
Fig. 4 is an enlarged view of a portion B of fig. 2 according to the present invention.
Fig. 5 is an enlarged view of a portion of C in fig. 1 according to the present invention.
Fig. 6 is a schematic diagram of the electrical principle of the present invention.
In the figures, the meaning of the reference numerals is as follows: 1. a foundation pit; 2. a lifting frame; 3. a sprocket support; 4. a sprocket support guide track; 5. a first guide wheel; 6. a sprocket; 7. a lifting platform; 8. a lifting platform guide track; 9. a second guide wheel; 10. a chain connecting plate; 11. a chain; 12. a hydraulic lever; 13. a hydraulic pump; 14. a hydraulic oil pipe; 15. a ring main unit; 16. a foundation pit cover plate; 17. an access door; 18. overhauling the crawling ladder; 19. a drain pipe; 20. a vent pipe; 21. a first travel switch SQ 1; 22. a second stroke switch SQ 2; 23. an up button SB 2; 24. a down button SB 3; 25. stop button SB 1.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
As shown in fig. 1-2, a rail hydraulic lifting type underground ring main unit with a controllable stroke is arranged in a foundation pit and comprises a vertical lifting structure, a first stroke switch 21, a second stroke switch 22 and a ring main unit 15, wherein the vertical lifting structure is arranged in the foundation pit 1, the ring main unit 15 is arranged on the vertical lifting structure, and the vertical lifting structure comprises a lifting frame 2, a chain wheel bracket 3, a chain wheel bracket guide track 4, a first guide wheel 5, a chain wheel 6, a lifting platform 7, a lifting platform guide track 8, a second guide wheel 9, a chain connecting plate 10, a chain 11, a hydraulic rod 12, a hydraulic pump 13 and a hydraulic oil pipe 14.
As shown in fig. 3, 4 and 6, the first stroke switch (SQ1)21 is installed on the top of the lifting frame 2, the second stroke switch (SQ2)22 is installed on the bottom of the lifting frame 2, the first stroke switch (SQ1)21 and the second stroke switch (SQ2)22 are respectively located at the upper end and the lower end of the movement stroke of the lifting platform 7, the first stroke switch (SQ1)21 and the second stroke switch (SQ2)22 are arranged on the top and the bottom of the lifting frame 2, when the lifting platform 7 moves to a predetermined stop position, the first stroke switch (SQ1)21 or the second stroke switch (SQ2)22 is touched, so as to stop the ring main unit 15 at a designated position, ensure that the stop positions of the ring main unit 15 rising to the ground and being buried under the ground are kept consistent, and avoid the damage to the lifting structure and the ring main unit 15 caused by the over-stop of the lifting due to the improper operation of workers, the service life of the ring main unit 15 is prolonged. (regarding the travel switch)
Lifting frame 2 installs in the bottom of foundation ditch 1, lifting frame 2 includes the base and stands on four stands on the base four corners, sprocket support guide rail 4's quantity is four, four sprocket support guide rail 4 are fixed connection respectively on lifting frame 2's four stands, sprocket support 3 connects in sprocket support guide rail 4 through 5 slidable of first leading wheel at upper and lower both ends, 5 rotatable settings in 3 upper ends of sprocket support and lower extreme of first leading wheel, the top at sprocket support 3 is installed to 6 rotatable sprockets.
The bottom of the chain wheel support 3 is fixedly connected with the output ends of the hydraulic rods 12, the bottom of the hydraulic pump 13 is fixed on the base of the lifting frame 2, and the hydraulic pump 13 is communicated with the two hydraulic rods 12 through a hydraulic oil pipe 14.
Lifting platform guide rails 8 are fixedly connected to four columns of lifting frame 2, lifting platform 7 is slidably connected to lifting platform guide rails 8 through second guide wheels 9, the second guide wheels 9 are rotatably fixed to four corners of lifting platform 7, and ring main unit 15 is fixedly mounted at the top of lifting platform 7.
In this embodiment, the bottom of the lifting frame 2 is fixed to the lower bottom surface of the inner cavity of the foundation pit 1 through expansion bolts.
In this embodiment, lifting frame 2 is by steel construction welding, and sprocket support 3 and lift platform 7 are square structure that square tube welding formed.
In this embodiment, the sprocket support guide rail 4 and the lifting platform guide rail 8 are both C-shaped bent steel structures.
In this embodiment, the chain connecting plate 10 is a steel member.
In the embodiment, the ring main unit further comprises a foundation pit cover plate 16, an access door 17, an overhaul ladder stand 18, a drain pipe 19 and a ventilation pipe 20, wherein the foundation pit cover plate 16 is fixed at the top of the ring main unit 15, a drain groove is formed around the upper end of the foundation pit 1, the drain groove is communicated with the drain pipe 19, a boss matched with the drain groove at the upper end of the foundation pit 1 is arranged at the bottom of the foundation pit cover plate 16, a sealing rubber strip is arranged on the boss, the waterproof performance of the foundation pit cover plate 16 can be improved through the arrangement of the sealing rubber strip, the top of the foundation pit 1 can be covered when the ring main unit 15 descends to the ground of the foundation pit 1 through the arrangement of the foundation pit cover plate 16, foreign matters are prevented from falling into the foundation pit 1, the safety of the ring main unit 15 is greatly improved, the foundation pit cover plate is of a steel structure, through the arrangement of the, through the setting of drain pipe 19, can in time discharge the ponding at 1 top in foundation ditch, avoid foundation ditch 1 the condition that ponding appears, through the setting of ventilation pipe 20, can be favorable to looped netowrk cabinet 15 heat dissipation, avoid looped netowrk cabinet 15 and foundation ditch 1 inside to gather too much heat, be favorable to prolonging looped netowrk cabinet 15's life.
When the lifting platform is used, the hydraulic pump 13 is started, the hydraulic pump 13 drives the hydraulic rod 12 to stretch when working, the hydraulic rod 12 stretches and retracts to drive the chain wheel support 3 to move up and down, and the chain 11 is meshed with the chain wheel 6 on the chain wheel support 3, and two ends of the chain 11 are respectively fixed on the chain connecting plate 10 of the lifting frame 2 and the lifting platform 7, so that the lifting platform 7 can be driven to move up and down while the chain wheel support 3 moves up and down. The ring main unit 15 fixed on the lifting platform 7 can vertically lift, so that the ring main unit 15 can be buried and exposed on the ground.
When the lifting platform 7 rises to the required stop position of the ring main unit 15 in the rising process, the first travel switch 21 is touched, the rising is stopped, when the lifting platform 7 falls to the required stop position of the ring main unit 15 in the falling process, the falling is stopped, therefore, the ring main unit can be guaranteed to rise to the ground and be buried in the ground to keep consistent at the stop position, the condition that the lifting structure and the ring main unit are damaged due to the fact that the lifting is stopped too by misoperation of workers is avoided, the service life of the ring main unit is prolonged, the structural design is reasonable, the ring main unit is easy to manufacture and install, and the ring main unit is not easy to damage, has strong practicability and is suitable for large-scale popularization.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (8)
1. Controllable stroke's guide rail hydraulic pressure over-and-under type buries looped netowrk cabinet system, sets up in the foundation ditch, its characterized in that: the lifting device comprises a vertical lifting structure, a first travel switch, a second travel switch and a ring main unit, wherein the vertical lifting structure is installed in a foundation pit, the ring main unit is installed on the vertical lifting structure, and the vertical lifting structure comprises a lifting frame, a chain wheel bracket guide rail, a first guide wheel, a chain wheel, a lifting platform guide rail, a second guide wheel, a chain connecting plate, a chain, a hydraulic rod, a hydraulic pump and a hydraulic oil pipe;
the lifting frame is installed at the bottom of the foundation pit and comprises a base and four stand columns standing on four corners of the base, the number of the chain wheel support guide rails is four, the four chain wheel support guide rails are fixedly connected to the four stand columns of the lifting frame respectively, the chain wheel support is connected to the chain wheel support guide rails in a sliding mode through first guide wheels at the upper end and the lower end of the chain wheel support, the first guide wheels are rotatably arranged at the upper end and the lower end of the chain wheel support, and the chain wheel is rotatably installed at the top of the chain wheel support;
the bottom of the chain wheel support is fixedly connected with the output ends of the hydraulic rods, the bottom of the hydraulic pump is fixed on a base of the lifting frame, and the hydraulic pump is communicated with the two hydraulic rods through hydraulic oil pipes;
the lifting platform is connected in the lifting platform guide rails in a sliding manner through second guide wheels, the second guide wheels are rotatably fixed at four corners of the lifting platform, and the ring main unit is fixedly arranged at the top of the lifting platform;
the chain connecting plates are respectively welded on the four stand columns of the lifting frame and the four corners of the lifting platform, the chains are meshed with the chain wheels, and two ends of each chain are respectively fixed on the lifting frame and the chain connecting plates of the lifting platform;
the first travel switch is installed at the top of the lifting frame, the second travel switch is installed at the bottom of the lifting frame, and the first travel switch and the second travel switch are respectively located at the upper end part and the lower end part of the movement stroke of the lifting platform.
2. The underground ring main unit system according to claim 1, wherein: the bottom of the lifting frame is fixed on the lower bottom surface of the inner cavity of the foundation pit through expansion bolts.
3. The underground ring main unit as claimed in claim 2, wherein: the lifting frame is welded by a steel structure, and the chain wheel support and the lifting platform are of square structures formed by square pipe welding.
4. The underground ring main unit system according to claim 3, wherein: the chain wheel support guide rail and the lifting platform guide rail are both C-shaped bending steel structures.
5. The underground ring main unit system according to claim 4, wherein: the chain connecting plate is a steel piece.
6. The underground ring main unit system according to claim 5, wherein: the ring main unit is characterized by further comprising a foundation pit cover plate, an access door, an access ladder, a drain pipe and a ventilation pipe, wherein the foundation pit cover plate is fixed to the top of the ring main unit, drain grooves are formed in the periphery of the upper end of the foundation pit, the drain pipe is communicated with the drain groove, a boss matched with the drain groove in the upper end of the foundation pit is arranged at the bottom of the foundation pit cover plate, and a sealing rubber strip is arranged on the boss;
the utility model discloses a maintenance ladder, including foundation ditch, access door, maintenance cat ladder, ventilation pipe, access hole, access door, maintenance cat ladder, maintenance access hole, ventilation pipe and foundation ditch, the access hole has been seted up to the lateral wall of foundation ditch, access door installs and reserves access hole department at the foundation ditch, the maintenance cat ladder is installed in the bottom of foundation ditch, the top of maintenance.
7. The underground ring main unit system according to claim 6, wherein: the foundation pit cover plate is of a steel structure.
8. The method for controlling the underground ring main unit system according to claim 1, wherein:
starting a hydraulic pump, driving the hydraulic rod to stretch when the hydraulic pump works, and driving the sprocket support to move up and down by the stretching of the hydraulic rod; the chain is meshed with a chain wheel on the chain wheel support, two ends of the chain are respectively fixed on the lifting frame and a chain connecting plate of the lifting platform, and the chain wheel support moves up and down and drives the lifting platform to move up and down;
when an up button is pressed, the lifting platform goes up, and when the lifting platform runs to the position of the first travel switch, the first travel switch is switched off, and the lifting platform stops running; when a down button is pressed, the lifting platform goes down, and when the lifting platform runs to the position of the second travel switch, the second travel switch is switched off, and the lifting platform stops running; in the operation process, if the operation needs to be stopped, a stop button is pressed, and the lifting platform stops operating; the controllable stroke is realized by adjusting the position of the travel switch, and the consistency of the stop positions of lifting to the ground and burying underground is ensured.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432805 | 2019-08-30 | ||
| CN2019214328058 | 2019-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111313309A true CN111313309A (en) | 2020-06-19 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922349506.4U Active CN211088937U (en) | 2019-08-30 | 2019-12-24 | Guide rail hydraulic lifting type underground ring main unit with controllable stroke |
| CN202010106563.4A Pending CN111313309A (en) | 2019-08-30 | 2020-02-21 | Stroke-controllable guide rail hydraulic lifting type underground ring main unit system and control method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922349506.4U Active CN211088937U (en) | 2019-08-30 | 2019-12-24 | Guide rail hydraulic lifting type underground ring main unit with controllable stroke |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN211088937U (en) |
| WO (1) | WO2021036323A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864832B (en) * | 2021-03-06 | 2023-03-03 | 浙江共顺电气有限公司 | Bury formula case and become with waterproof corrosion-resistant function |
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- 2020-04-30 WO PCT/CN2020/088278 patent/WO2021036323A1/en active Application Filing
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| CN205282961U (en) * | 2015-11-23 | 2016-06-01 | 山西晋开成套设备有限公司 | Hidden high -low pressure case becomes cabinet |
| CN105967094A (en) * | 2016-05-17 | 2016-09-28 | 石茂惠 | Lifting device for mounting of power distribution cabinet |
| CN106429948A (en) * | 2016-12-19 | 2017-02-22 | 福建三鑫隆信息技术开发股份有限公司 | Ascending and descending burying field light current box and light current well |
| CN208233879U (en) * | 2018-05-14 | 2018-12-14 | 李永文 | Chain lifting formula underground garbage bin |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021036323A1 (en) | 2021-03-04 |
| CN211088937U (en) | 2020-07-24 |
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Application publication date: 20200619 |
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